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"What do we know of that planet?"
"There isn't much in the data banks about the Helska system. There's not an easily inhabitable planet among the seven, and no one's taken the time or trouble to build one up. None of them even have names—just Helska 1 to 7."
―Researchers Danni Quee and Garth Breise[2]

Helska IV, also called Helska 4 or simply Helska, was the fourth planet in the Helska system, located in Dalonbian sector at the far edge of the Outer Rim Territories.


Helska IV was essentially a shell of ice around a vast inner ocean, with occasional pockets of air located in the thick icy crust. The planet was generally considered inhospitable to life as the galaxy knew it, and thus had no native life forms.[2]


Helska IV was the site of the Yuuzhan Vong's first foothold during their invasion of the galaxy. It was here that the Praetorite Vong, comprising the first wave of the Yuuzhan Vong invasion, set their own yammosk, or War Coordinator, under the frozen surface.[2]

Following the discovery of the Vong on Helska IV by the New Republic, Jedi Knight Anakin Solo formulated and executed a plan to use a shieldship to reflect energy back at the planet, thereby stealing the yammosk's energy through evaporation. Though several ships were lost, the plan worked, and the ice planet's liquid core froze and shattered, killing the yammosk and all Yuuzhan Vong on the planet.[2]



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